* UITextBox: 支持自定义右键菜单

SunnyUI/Common/UControl.cs

@@ -603,5 +603,21 @@ namespace Sunny.UI
                 DragCtrlsMouseDown.TryRemove(ctrl.Name, out _);
             }
         }
+
+        public static void ClearEvents(object instance)
+        {
+            var events = instance.GetType().GetEvents(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static);
+            foreach (var eventInfo in events)
+            {
+                var fieldInfo = instance.GetType().GetField(eventInfo.Name, BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance);
+                if (fieldInfo.GetValue(instance) is Delegate eventHandler)
+                {
+                    foreach (var invocatedDelegate in eventHandler.GetInvocationList())
+                    {
+                        eventInfo.GetRemoveMethod(fieldInfo.IsPrivate).Invoke(instance, new object[] { invocatedDelegate });
+                    }
+                }
+            }
+        }
     }
 }

SunnyUI/Controls/UITextBox.cs

@@ -38,6 +38,7 @@
  * 2022-07-17: V3.2.1 增加SelectionChanged事件
  * 2022-07-28: V3.2.2 修复了有水印文字时，不响应Click和DoubleClick事件的问题
  * 2022-09-05: V3.2.3 修复了无水印文字时，光标有时不显示的问题
+ * 2022-09-16: V3.2.4 支持自定义右键菜单
 ******************************************************************************/
 
 using System;
@@ -138,6 +139,12 @@ namespace Sunny.UI
             toolTip.SetToolTip(btn, tipText);
         }
 
+        protected override void OnContextMenuStripChanged(EventArgs e)
+        {
+            base.OnContextMenuStripChanged(e);
+            edit.ContextMenuStrip = ContextMenuStrip;
+        }
+
         /// <summary>
         /// 填充颜色，当值为背景色或透明色或空值则不填充
         /// </summary>